How can I end all suffering? ?

The only one with the power to end all suffering is Jehovah God. He will do so in the very near future-Psalms 37:10,11.Learn more at jw.org.

You can't.  All you can do is let your light so shine that when people see your love, mercy, kindness, and good works, they will have a reason to glorify God.

Life is pain, highness.

Anyone who tells you different is selling something.

-William Goldman (The Princess Bride)

You cant

Psalm 90:10 — Seventy years are given to us!

Some even live to eighty. But even the best years are filled with pain and trouble; soon they disappear, and we fly away.

I'm sure that millions of people feel the same! We'd love to live in such a world! We can all contribute, of course. We can only start with ourselves. Avoiding contributing to the mass daily suffering of millions of animals is a start (by not eating meat or wearing leather) is an obvious example. Donating to charity, living peacefully, prayer and meditation, etc. You might feel that your contribution is a drop in the ocean, but that is what the ocean is: drops. Good Luck!

The true meaning of human life is.... Self Realization. Love /hate, Good/evil, happiness/sorrow, positive/ negative, virtue/sin, soul/ body, heaven /hell.. are the creations of God...so, by pure faith in God we can understand our eternal nature which relates to our soul.. as our soul is the Part and Parcel of.. Supreme Soul.. "God".

Actually, we are spiritual souls but we are in human body. We are from the spiritual world. God has sent us on the earth...only for self realization.. as our souls are not as pure as, they have to be... So, God has given us human life where our body feels happiness as well as suffers pain. Therefore, we souls are here... to achieve... the level of purity and to become pure soul.. we should make an effort to understand the deeper meaning of unconditional love for all living beings.. in every situation..

Moreover, the eternal nature of our soul is to Love God..

By mastering use of Fires of the Holy Spirit. 

Jesus taught Baptism by Holy-Fire for a reason!